Answer
Please see below.
Work Step by Step
As $x$ approaches $0$ from both left and right, we can see that the function $f(x)=\frac{\sin x}{x}$ approaches $1$. Thus, we can conclude that$$\lim_{x \to 0} \frac{\sin x}{x}=1.$$
Calculus 10th Edition
by Larson, Ron; Edwards, Bruce H.
Published by
Brooks Cole
ISBN 10:
1-28505-709-0
ISBN 13:
978-1-28505-709-5
Chapter 1 - Limits and Their Properties - Section Project - Graphs and Limits of Trigonometric Functions - Page 90: a
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